Named query works in testing, but not with a binding

I have a simple named query that works via the Testing tab on the query builder. I can test it with: TownA as Plant and I get results I expect:

SELECT [MachineID]
FROM machines
WHERE [Target] - [Bag] = 0 
AND [State] NOT IN(4, 65535, 56, 1)
AND (
    (:Plant = 'TownA' AND [RoomCode] LIKE 'WB%')
    OR 
    (:Plant = 'TownB' AND [RoomCode] NOT LIKE 'WB%')
)
ORDER BY MachineID ASC

When I attempt to bind the query to a label, I get the error:
Error_Configuration("RuntimeException: Syntax Error on Token 'End of Expression' (Line 0, Char0)")

This happens when I put the Plant value in without quotes( TownA ), as I've tested with in the query builder.

If I I surround the Plant value with quotes in the binding ( "TownA" ), it accepts it. However, I get an empty dataset as the result, since with quotes my query doesn't match, and doesn't return results. (If I test with quotes in the query builder, I also get no results).

How can I get this to work? It seems like it should be simple, but I'm not getting anywhere with it.

This seems backwards to me. Why would it not be something like

[Plant] = :Plant

You would provide TownA, TownB, etc. as the Plant parameter.

The query isn't really the problem. It tests fine, but I'm not able to use the query in the binding. I have tried doing the query other ways (which also give me the expected results in the testing tab of the query builder), but I run into the same issue when attempting to use a binding.

You are going to have to show how you are providing these parameters to your named query, the bindings.

It's working now...It seems I just needed to hit save after creating the query before it was really functional in Designer.